Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires maglnet/composer-require-checker ^4.18.0 -> satisfiable by maglnet/composer-require-checker[4.18.0, 4.19.0]. - Root composer.json requires simplesamlphp/simplesamlphp ^2.4 -> satisfiable by simplesamlphp/simplesamlphp[v2.4.0, ..., v2.4.4]. - simplesamlphp/simplesamlphp[v2.4.0, ..., v2.4.4] require symfony/console ^6.4 -> satisfiable by symfony/console[v6.4.0, ..., v6.4.30]. - Conclusion: don't install symfony/console v6.4.30 (conflict analysis result)